外弹道测量中速度修正新方法──辐射计法

A NEW METHOD ABOUT SPEED CORRECTION IN MEASURING EXTERNAL TRAJECTORY──RADIOMETER METHOD

介绍了外弹道测量中精度较高的速度修正新方法──辐射计法。其速度（距离变化率）误差是利用与距离误差△Ｒ之间的关系得到，而△Ｒ由微波辐射计在电波传播路径上直接测量大气辐射亮度温度得到。由于用微波辐射计得到的距离误差△Ｒ的标准差一般比常用的折射率预报法和射线描迹法降低１／３到２／３，所以利用本方法得到的距离变化率误差精度也必会比常用方法高，而且辐射计法可在任何方位角和仰角上进行实时修正。

This paper introduced a new method about the speed correction with higher precision in measuring external trajectory──radiometer method.The error of missile speed was deduced by the distance error. The distance error was obtained by a microwave radiometer directly detecting the atmospheric radiation brightness temperature on the path of radio wave propagation. The standard deviation of the distance error obtained by using radiometer detecting method is lower by one-third to two-thirds than that obtained by using the normal method.Therefore, the precision of the distance variation rate is higher and can make real time correction on azimuth and elevation by using this method.